Factorial Grothendieck polynomials.
Finding the automorphism group of a circulant association scheme in polynomial time.
Finite mutation classes of coloured quivers
We show that the mutation class of a coloured quiver arising from an m-cluster tilting object associated with a finite-dimensional hereditary algebra H, is finite if and only if H is of finite or tame representation type, or it has at most two simples. This generalizes a result known for cluster categories.
Finitely presented subgroups of systolic groups are systolic
We prove that every finitely presented subgroup of a systolic group is itself systolic.
Flag-symmetric and locally rank-symmetric partially ordered sets.
Forestation in hypergraphs: Linear -trees.
Free quasi-symmetric functions, product actions and quantum field theory of partitions.
From a 1-rotational RBIBD to a partitioned difference family.
Further determinant identities related to classical root systems
By introducing polynomials in matrix entries, six determinants are evaluated which may be considered extensions of Vandermonde-like determinants related to the classical root systems.